I was actually successful in one that I literally got from the American version of The Office.

I conditioned one of my employees to want chewing gum after I did a clap motion with my hands: snap the fingers on both hands really quick and do a fist to palm tap and say "hey bud, want gum?" and because I specifically bought his favorite he would always say yes.

Eventually, and after months of doing it, I was walking around the office when I did the motion, but this time without gum. Now, he was on the fifth levek of the virtual world doing his shit fully concentrated and he STILL looked up at me looking anxious. I said "what's up?" and he just said nothing, that he felt that he was missing something but couldn't put the finger on it.

Just like in the show, he then complained that his mouth felt funny. Eventually he waddled his way to my office to ask for gum 🤣🤣🤣🤣

tl;dr I successfully Pavlov'ed one of my employees to have a need of chewing gum every time I do a finger snap clap motion.

I am the best manager in the world.